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Auto-jet Part #
400CAT44
Catalytic Converter
Blue Bird
Catalytic Converter for Blue Bird school buses with Caterpillar engines. B-Series engine, 4" inlet, 4" outlet.
Model
Year Range
Material
Outside Diameter
4
Overall Length
OEM Part Number
0064103, 01664168
United Muffler Equivalent
Also Known As
Grand Rock: M213CT | Truckex: 4256
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Provide your OEM# when ordering.
Exhaust parts vary by bus configuration even within the same model and year.
Your OEM number is the most reliable way to confirm correct fitment.
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